An alternative Wald type test called the quel test is developed for two linear restrictions by finding the critical region based on the quel utilizing the repeated values of estimated parameters of interest under the null. Simulation shows evidence that the full quel test performs best in that it holds nominal level well and shows monotonic increasing power properties.
Saha, Krishna K.
"Quel Test for Two Linear Restrictions in the Nonlinear Models,"
Journal of Modern Applied Statistical Methods: Vol. 8
, Article 12.
Available at: http://digitalcommons.wayne.edu/jmasm/vol8/iss1/12